Craftsman 919157251 Owner’s Manual

SEAR8

OWNERS

MANUAL

MODEL NO.

919.157251

|MI_ORTAN_:___

Re_l-_e Safety Guideines and All Instructions Carefully

Before Operating.

CRRFTSMRN,

GASOLINE ENGINE

AIR COMPRESSOR

Record in the spaces provided.

(1) The model number which can be found

on the maintenance label onthe front of the airtank.

(2) The cede number which can be found

onthefoil labelonthe rear of the airtank.

(3) The Manufacturers Number {ASME

Code Compressor only) is located on the meta_data plate which iswelded onto the backside of the air tank. (This data plate ispainted the same color as

thetank.)

(4) The Engine Manufacturer's name is

located onthe frontofthe engine.

(5) The EngineModel Number stamped on

top oftheengine.

(6) The EngineType which can befound

ASSEMBLY

OPERATION

MAINTENANCE

REPAIR PARTS

stamped on top of the engine.

Retain these numbers for future reference.

Model No.

Code No.

Mfg. No, Engine Mfg. Name

Engine Mfg. Model Engine Mfg, Type

• This product Is not equipped with a spark erresUlng muffler. If the product will be used around flammable materials, or on land covered with materials such as agricultural crops, forest, brush, grass, or other similar

items, then an approved spark arrestor must be installed and is legally required in the state of California. It is a violation of California statutes section 130050 and/or sections 4442 and 4443 of the California Public Resources

Code, unless the engine is equipped with a spark arrestor, as defined in section 4442, and maintained in effective working order. Spark arrestors are also required on some U, S. Forest service land and may also be legally required under other statutes and ordinances.

• Engine exhaust from this product contains chemicals known, in certain quantities, to cause cancer, birth defects or other reproductive harm.

Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.

D20396 Rev, 0 2/16/00

Page

SAFETY GUIDELINES ...................................................................................................... 3

WARNING CHART ........................................................................................................... 3-5

SPECIFICATION CHART ................................................................................................. 6

GLOSSARY ...................................................................................................................... 6

ACCESSORIES FOR USE WTIH

SEARS AIR COMPRESSORS ...................................................................................... 6

GENERALINFORMATION ............................................................................................... 7

DESCRIPTION OF OPERATION ...................................................................................... 7

ASSEMBLYINSTRUCTIONS ........................................................................................... 8

Items You Will Need to Assemble Your Compressor .................................................. 8

Installing Handle, Foot Extension Bracket, Wheels, Shut Off Valve ............................ 8

INSTALLATION AND BREAK-IN

PROCEDURES ................................................................................................................ 9-10

Location of Air Compressor ........................................................................................ 8

Permanent Installation

............................................................................................... g

Lubrication, Oil and Gasoline ...................................................................................... 9

Break-In Procedures ................................................................................................... 10

OPERATING PROCEDURES ............................................................................................ 11

MAINTENANCE .............................................................................................................. 11-14

AirCompressor ........................................................................................................... 11

Compressor Pump Air Intake Filter-- Inspection and Replacement .......................... i. 11

Compressor Oil-- Checking and Changing ................................................................ 11

Check Valve--Inspection and Replacement .............................................................. 11

Safety Valve -- Inspection and Replacement ............................................................. 11

Engine-- Oil Change and Air Cleaner ......................................................................... 11

Engine--Adjustments ............................................................................................... 11

Belt-- Replacement ................................................................................................... 13

Pulley and Flywheel -- Alignment .............................................................................. 14

STORAGE ........................................................................................................................ 13

TROUBLESHOOTING GUIDE ......................................................................................... 15-16

AIR COMPRESSOR DIAGRAM ........................................................................................ 18

Parts List .................................................................................................................... 19

COMPRESSOR PUMP DIAGRAM .................................................................................... 20

Parts List .................................................................................................................... 21

HOWTO ORDER REPAIR PARTS ....................................................................... Back Cover

WARRANTY ......................................................................................................... BackCover

This manual contains information that is important for you to know and understand. This information relates to protecting YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information,

we use the symbols to the right. Please read the manuar and pay attention to these sections.

DANGER indicates an imminently hazardous situation

which, if not avoided, will result in death or serious

iniurv.

WARNING indicates a potentially hazardous situa- tion which, if not avoided, could result in death of

CAUTION indicates a potentially hazardous situation which, if not avoided, _ result in minor or moder-

ate in'lUnt.

CAUTION used without the safety alert symbol indi cates a potentially hazardous situation which, if not avoided, _ result in i_roDertv damaae.

D20396 Rev 0 2/16/00

2 - ENG

___ SAV_TIONS I_

IMPROPER OPERATION OR MAINTENANCE OF THIS PRODUCT COULD RESULT IN SERIOUS INJURY AND PROPERTY DAMAGE. READ AND UNDERSTAND ALL WARNINGS AND OPERATING INSTRUCTIONS BEFORE USING THIS EQUIPMENT.

.so°xosoo [ li l

WHAT CAN HAPPEN

GASOLINE AND GASOLINE VAPORS CAN BECOME IGNITED

BY COMING INTO CONTACT WITH HOT COMPONENTS SUCH AS THE MUFFLER, FROM ENGINE EXHAUST GASES, OR

FROM AN ELECTRICAL SPARK. COMBUSTIBLE MATERIALS WHICH COME INTO CONTACT

WITH HOT ENGINE PARTS CAN BECOME IGNITED,

UNATTENDED OPERATION OF THIS PRODUCT COULD RESULT IN PERSONAL iNJURY OR PROPERTY DAMAGE,

TURN ENGINE OFF AND ALLOW IT TO COOL BEFORE ADDING FUEL TO THE TANK. EQUIP AREA OF OPERATION WITH A FIRE EXTINGUISHER CERTIFIED TO HANDLE GASOLINE OR FUEL FIRES,

ADD FUEL OUTDOORS IN A WELL VENTILATED AREA. MAKE

SURE THERE ARE NO SOURCES OF IGNIT[ON, SUCH AS CIGARE-FrES NEAR REFUELING LOCATION.

OPERATE COMPRESSOR IN A CLEAN, DRY,WELL VENTILATED AREA A MINIMUM OF FORTY-EIGHT INCHES FROM ANY BUILD-

ING, OBJECT OR WALL. DO NOT OPERATE UNIT INDOORS OR IN ANY CONFINED AREA.

STORE FUEL IN A SECURE LOCATION AWAY FROM COMPRESSOR.

ALWAYS REMAIN IN AI-FENDANCE WITH THE PRODUCT WHEN IT iS OPERA'RNG.

HOW TO PREVENT IT

RISK OF BURSTING I_

IRTA_: THE FOLLOWING CONDITIONS COULD LEADTO AWEAKENING OF THE TANK, AND RESULT IN A

1. FAILURE TO PROPERLY DRAIN CONDENSED WATER FROM THE TANK, CAUSING RUST AND THINNING OF THE

STEEL TANK.

2. MODIFICATIONS OR A_EMPTED REPAIRSTO THE TANK.

3. UNAUTHORIZED MODIFICATIONS TO THE UNLOADER

VALVE, SAFETY VALVE, OR ANY OTHER COMPONENTS WHICH CONTROL TANK PRESSURE.

4. EXCESSIVE VIBRATION CAN WEAKEN THE AIR TANK AND

CAUSE RUPTURE OR EXPLOSION. EXCESSIVE

VIBRATION WILL OCCUR IF THE COMPRESSOR IS NOT

PROPERLY MOUNTED OR IF THE ENGINE OPERATES

ABOVE RECOMMENDED RPM.

ATTACHMENTS & ACCESSORIES:

EXCEEDING THE PRESSURE RATING OF AIR TOOLS, SPRAY GUNS, AIR OPERATED ACCESSORIES, TIRES AND OTHER

INFLATABLES CAN CAUSE THEM TO EXPLODE OR FLY

APART, AND COULD RESULT IN SERIOUS INJURY.

VIOLENT TANK EXPLOSION AND COULD CAUSE PROPERTY DAMAGE OR SERIOUS INJURY.

WHAT CAN HAPPEN

DRAIN TANK DAILY OR AFTER EACH USE, iF TANK DEVELOPS

A LEAK, REPLACE IT IMMEDIATELY WITH A NEW TANK OR REPLACE THE ENTIRE COMPESSOR

NEVER DRILL INTO, WELD, OR MAKE ANY MODIFICATIONS TO THE TANK OR ITS AT[AGHMENTS.

THE TANK IS DESIGNED TO WITHSTAND SPECIFIC OPERATING PRESSURES. NEVER MAKE ADJUSTMENTS OR PARTS SUBSTITUTIONS TO ALTER THE FACTORY SET OPERA_NG PRESSURES.

DO NOT REMOVE THE STIFFENER BAR CONNECTING THE

COMPRESSOR PUMP TO THE ENGINE, EXCEPT TO ADJUST BELT TENSION, THEN SECURELY TIGHTEN THE STIFFNER BAR NUTS. THIS BAR CONTROLS OUTFIT VIBRATION.

FOR ESSENTIAL CONTROL OF AIR PRESSURE, YOU MUST

INSTALL A PRESSURE REGULATOR AND PRESSURE GAUGE

TO THE AIR OUTLET OF YOUR COMPRESSOR FOLLOW THE

EQUIPMENT MANUFACTURERS RECOMMENDATION AND NEVER

EXCEED THE MAXIMUM ALLOWABLE PRESSURE RATING OF

A_rACHMENTS. NEVER USE COMPRESSOR TO INFLATE

SMALL LOW-PRESSURE OBJECTS SUCH AS CHILDREN'S

TOYS, FOOTBALLS, BASKETBALLS. ETC.

HOW TO PREVENT IT

3 - ENG

D20396 Rev 0 2/16/00

RISK FROM FLYING OBJECTS

WHAT CAN HAPPEN

THE COMPRESSED AIR STREAM CAN CAUSE SOFT TISSUE

DAMAGE TO EXPOSED SKIN AND CAN PROPEL DIRT, CHIPS, LOOSE PARTICLES AND SMALL OBJECTS AT HIGH SPEED,

RESULTING IN PROPERTY DAMAGE OR PERSONAL INJURY.

RISK TO BREATHING

WHAT CAN HAPPEN

BREATHING EXHAUST FUMES FROM ENGINE WILL CAUSE SERIOUS INJURY OR DEATH.

THE COMPRESSED AIR FROM YOUR COMPRESSOR IS NOT

SAFE FOR BREATHING! THE AIR STREAM MAY CONTAIN

CARBON MONOXIDE, TOXIC VAPORS OR SOLID PARTICLES FROM THE TANK.

SPRAYED MATERIALS SUCH AS PAINT, PAINT SOLVENTS, PAINT

REMOVER, INSECTICIDES, WEED KILLERS, CONTAIN HARM- FUL VAPORS AND POISONS.

HOW TO PREVENT IT

ALWAYS WEAR ANSI Z87.1 APPROVED SAFETY GLASSES WITH SIDE SHIELDS WHEN USING THE COMPRESSOR.

NEVER POINT ANY NOZZLE OR SPRAYER TOWARD ANY PART

OF THE BODY OR AT OTHER PEOPLE OR ANIMALS. ALWAYS TURN THE COMPRESSOR OFF AND BLEED

PRESSURE FROM THE AIR HOSE AND TANK BEFORE

ATTEMPTING MAINTENANCE, ATTACHING TOOLS OR ACCES- SORIES.

HOW TO PREVENT IT

ALWAYS OPERATE AIR COMPRESSOR OUTSIDE IN A CLEAN, WELL VENTILATED AREA. AVOID ENCLOSED AREAS SUCH AS

GARAGES, BASEMENTS, STORAGE SHEDS, WHICH LACK A STEADY EXCHANGE OF AIR. KEEP CHILDREN, PETS AND

OTHERS AWAY FROM AREA OF OPERATION. NEVER INHALE AIR FROM THE COMPRESSOR EITHER

DIRECTLY OR FROM A BREATHING DEVICE CONNECTED TO THE COMPRESSOR.

WORK IN AN AREA WITH GOOD CROSS-VENTILATION. READ AND FOLLOW THE SAFETY INSTRUCTIONS PROVIDED ON THE LABEL OR SAFETY DATA SHEETS FOR THE MATERIAL YOU ARE

SPRAYING. USE A NIOSH/MSHA APPROVED RESPIRATOR

DESIGNED FOR USE WITH YOUR SPECIFIC APPLICATION.

RISK FROM MOVING PARTS

WHAT CAN HAPPEN

THE ENGINE CAN START ACCIDENTALLYIF THE FLYWHEELIS TURNED BY HAND OR MOVED BY PULLING ON THE STARTER

ROPE.

MOVING PARTS SUCH AS THE PULLEY, FLYWHEEL AND BELT CAN CAUSE SERIOUS INJURY, IF THEY COME INTO CONTACT

WITH YOU OR YOUR CLOTHING

ATTEMPTING TO OPERATE COMPRESSOR WITH DAMAGED OR MISSING PARTS OR ATTEMPTING TO REPAIR COMPRES-

SOR WITH PROTECTIVE SHROUDS REMOVED CAN EXPOSE YOU TO MOVING PARTS AND CAN RESULT IN SERIOUS

INJURY.

D203_ Rev 0 2/16/0Q

4-ENG

HOW TO PREVENT IT

ALWAYS DISCONNECT THE SPARK PLUG AND BLEED PRESSURE FROM THE TANK BEFORE PERFORMING

MAINTENANCE. NEVER OPERATE THE COMPRESSOR WITH GUARDS OR

COVERS WHICH ARE DAMAGED OR REMOVED

ANY REPAIRS REQUIRED ON THIS PRODUCT SHOULD BE

PERFORMED BY AUTHORIZED SERVICE CENTER PERSON-

NEL.

RISK OF BURNS

WHAT CAN HAPPEN

TOUCHING EXPOSED METAL SUCH AS THE COMPRESSOR

HEAD OR OUTLET TUBES OR CONTACT WITH HOT ENGINE PARTS, SUCH AS THE MUFFLER, CAN RESULT IN SERIOUS

BURNS.

THE GASOLINE ENGINE, THE ENGINE MUFFLER, THE COMPRES-

SOR HEAD AND TUBING BECOME VERY HOT DURING OPERATION.

RISK OF FALLING

WHAT CAN HAPPEN

A PORTABLE COMPRESSOR CAN FALL FROM A TABLE, WORKBENCH OR ROOF CAUSING DAMAGE TO THE COMPRES-

SOR AND COULD RESULT IN SERIOUS INJURY OR DEATH TO THE OPERATOR.

HOW TO PREVENT IT

NEVER TOUCH ANY EXPOSED METAL PARTS ON ENGINE OR COMPRESSOR DURING OR IMMEDIATELY AFTER OPERATION. ENGINE AND COMPRESSOR WILL REMAIN HOT FOR SEVERAL MINUTES AFTER OPERATION.

DO NOT REACH AROUND PROTECTIVE SHROUDS OR ATTEMPT MAINTENANCE UNTIL UNIT HAS BEEN ALLOWED TO COOL.

HOW TO PREVENT IT

ALWAYS OPERATE COMPRESSOR IN A STABLE SECURE POSITION TO PREVENT ACCIDENTAL MOVEMENT OF THE UNIT. NEVER OPERATE COMPRESSOR ON A ROOF OR OTHER ELEVATED POSITION. USE ADDITIONAL AIR HOSE TO REACH HIGH LOCATIONS.

RISK OF PROPERTY DAMAGE WHEN TRANSPORTING I n

COMPRESSOR

(Fire, Inhalation, Damage to Vehicle Surfaces)

WHAT CAN HAPPEN

FUEL OR OIL CAN LEAK OR SPILL AND COULD RESULT IN FIRE

OR BREATHING HAZARD, SERIOUS INJURY OR DEATH CAN RE- SULT. FUEL OR OIL LEAKS WILL DAMAGE CARPET, PAINT OR

OTHER SURFACES IN VEHICLES OR TRAILERS.

GSW.99 -- 9122199

HOWTO PREVENT IT

IF COMPRESSOR IS EQUIPPED WITH A FUEL SHUT-OFF VALVE,

TURN THE VALVE TO THE OFF POSITION BEFORE TRANSPORT-

ING TO AVOID FUEL LEAKS. IF COMPRESSOR IS NOT EQUIPPED WITH A FUEL SHUT-OFF VALVE, DRAIN THE FUEL FROM TANK BEFORE TRANSPORTING. TRANSPORT FUEL ONLY IN AN OSHA APPROVED CONTAINER. ALWAYS PLACE COMPRESSOR ON A PROTECTIVE MAT WHEN TRANSPORTING TO PROTECT AGAINST DAMAGE TO VEHICLE FROM LEAKS. REMOVE COMPRESSOR FROM VEHICLE IMMEDIATELY UPON ARRIVAL AT YOUR DESTI-

NATION.

5 - ENG

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Model No.

Engine Horsepower

Compressor DisplacementCFM

CompressorBore

Compressor Stroke Air Tank/Capacity- Gallons

Approximate UnloaderReset Pressure Approximate UnloaderBlow-OffPressure

SCFM @ 40 psig SCFM @ 90 psig

919.157251

15.3

2 7/8"

20ASME

110

12.0

10.0

SCFM: Standard cubic feet per minute; aunit of measure of air delivery.

PSIG: Pounds per square inch gauge; a unitof measure of pressure.

ASME: American Society of Mechanical Engineers;

made, tested, inspected and registeredto meet the

standardsof theASME.

CFM: Cubic feet per minute.

Unloader Blow-Off Pressure: All models are continu-

ously running outfits controlled by tank pressure when the maximum tank pressure is obtained, the unloader

valve will blow-off. This will cause the compressor to exhaust the air to the atmosphere and not the tank.

This decreases the load on the engine and allows it to run at a near no-load condition.

Unloader Reset Pressure: When the tank pressure drops to a predetermined point, the unloader valve

closes. The tank pressure will now increase until it reaches the unloader blow-off pressure.

The following accessories are available through the current general sales catalog or at full-line Sears stores,

• SPRAY GUNS

• BLOW GUNS

• AIR CAULKING GUNS eAIR POWER WASHER

"SANDBLASTERS

• AIR BRUSH SET oIN-LINE FILTERS

• TIRE CHUCKS

•PAINT TANKS

•AIR CARRY TANKS

•INFLATOR KITS

•QUICK CONNECTOR SETS

(various sizes)

•AIR PRESSURE REGULATORS

•OIL FOG LUBRICATORS

•AIR TOOLS: Sanders Drills

Impact Wrenches Rachets

=AIR HOSE:

1/4" or 3/8" I.D. in various lengths

020396 Rev 0 2/16/00

6 - ENG

You have purchased an air compressor unit consisting of a 2 cylinder, single-stage air compressor pump and air

tank. Included with portable compressors are wheels, gauges, and handle.

Your air compressor can be used for operating paint spray guns, air tools, caulking guns, grease guns, air brushes,

sandblaster, or inflating tires and plastic toys, spraying weed killers, insecticides, etc.

ON/OFF

SWITCH-_-_

An air pressure regulator is usually required for most of these applications. Regulators can be purchased from

most Sears stores or through the Sears Power Tool Catalog.

Separate air transformers which combine the functions or air regulation and/or moisture and dirt removal should be used where applicable.

UNLOADER VALVE

VALVE

SHUTOFF VALVE

CHECK

VALVE

Figure 1

Air Compressor Pump: To compress air, the pistons move up and down in the cylinders. On the downstroke,

air is drawn in through the air intake filter and then through the air intake valves. The exhaust valve remains closed. On the upstroke of the piston, air is compressed. The

intake valves close and compressed air is forced out through the exhaust valve, through the outlet tube, through

the check valve and into the air tank. Working air is not available until the compressor has raised airtank pressure above that required at the air outlet.

Throttle Control: Athrottle control has been incorporated as an extra feature. When maximum tank pressure is reached and the unloader valve unloads air, it also

activates a throttle control on the engine. This gas saving featu reholds the engine at a factory-set idling speed until air pressure in the air tank drops to reset pressure; it then

reactivates the throttle control and accelerates the engine to full throttle.

Unloader Valve: All models are continuously running

outfits controlled by tank pressure. When the maximum

tank pressure is obtained, the unloader valve will exhaust the compressed air to the atmosphere (blow-off). When

the pressure drops to a predetermined point, the unloader valve closes and causes the tank pressure to increase.

Safety Valve: If the pressure switch does not shut off the air compressor at or near its cut-out pressure setting, the safety valve will protect against high pressure by "pop-

ping out" at its factory set pressure (slightly higherthan the pressure switch cut-out setting).

Check Valve: When the air compressor is operating, the check valve is "open," allowing compressed air to enter the air tank. When the air compressor reaches "cut-out"

pressure, the check valve "closes," allowing air pressure to remain inside the air tank. Ifthe air is not unloaded, the

motor will try to start, but will be unable to. The check valve allows the motor to restart freely.

Shut Off Valve: Turn the knob counterclockwise to open the valve and clockwise to close.

7 - ENG

D20396 Rev 0 2/16/00

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